Decoupling control method of fuel cell air intake system

A fuel cell and air intake system technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as PEMFC damage and impact on PEM, and achieve the effects of intuitive structure, improved accuracy, and strong robustness

Active Publication Date: 2020-07-10
JILIN UNIV
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  • Abstract
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Problems solved by technology

But at the same time, the instantaneous pressure difference between the cathode and anode will affect the PEM, causing irreversible damage to the PEMFC

Method used

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  • Decoupling control method of fuel cell air intake system
  • Decoupling control method of fuel cell air intake system
  • Decoupling control method of fuel cell air intake system

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Such as Figure 1 to Figure 9 As shown, the present invention provides a decoupling control method for a fuel cell air intake system, wherein the structure of the fuel cell can be found in figure 1 As shown, the decoupling control method includes the following steps:

[0031] Step 1. Establish a model of the fuel cell intake system, including air compressor system modeling, intake manifold modeling, cathode modeling, and throttle modeling in sequence. The specific values ​​and constants of the physical parameters in the model are shown in Tables 1 to 3. ;

[0032] In step one, the air compressor modeling includes the following steps:

[0033] The compressor model is divided into two parts. The first part is a static motor which determines the air flow rate through the compressor and then uses thermodynamic equations to calculate the outlet air temperature....

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Abstract

The invention discloses a decoupling control method of a fuel cell air inlet system. The decoupling control method comprises the steps of establishing a fuel cell air inlet system model, designing a controller and the like, establishing an air system control-oriented model, and designing an active disturbance rejection controller based on feedback linearization. Firstly, two independent second-order affine systems are obtained through feedback linearization, and output and control input are decoupled; the self-adaptive anti-interference control is used for tracking the flow entering the cathode and the cathode pressure, and multiple sets of simulation are achieved under different working conditions according to data, measured in an experiment, of the compressor and the throttle valve. Themethod not only has good performance, but also has strong robustness to unknown model uncertainty and disturbance.

Description

technical field [0001] The invention relates to the technical field of a fuel cell air intake system, in particular to a decoupling control method for a fuel cell air intake system. Background technique [0002] A proton exchange membrane fuel cell (hereinafter referred to as PEMFC) is a device that converts the chemical energy of hydrogen and oxygen into electrical energy, and it is considered to be the most potential substitute for conventional engines. For high-power PEMFCs, the transient behavior of the air supply subsystem plays a crucial role in delivering the required power and prolonging the lifetime of the PEMFC. Especially for vehicle fuel cells, due to the complex road conditions and frequent load demands, higher requirements are put forward for the dynamic dynamic response and steady-state tracking of PEMFC. Among the many characteristics, the air flow into the cathode and the cathode pressure are undoubtedly the two most critical variables. Low air flow causes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04992H01M8/04089H01M8/04746
CPCH01M8/04992H01M8/04089H01M8/04753Y02E60/50
Inventor 高金武刘华洋胡云峰陈虹
Owner JILIN UNIV
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